Juniper MX2020 Hardware Manual page 520

MX2020 3D Universal Edge Router Hardware Guide
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CAUTION: Do not leave a fiber-optic transceiver uncovered except when
inserting or removing cable. The safety cap keeps the port clean and
prevents accidental exposure to laser light.
CAUTION: Avoid bending fiber-optic cable beyond its minimum bend
radius. An arc smaller than a few inches in diameter can damage the cable
and cause problems that are difficult to diagnose.
Immediately cover each optical transceiver and the end of each fiber-optic cable with
6.
a rubber safety cap.
Arrange the disconnected cables in the upper and lower cable managers to prevent
7.
the cables from developing stress points.
Simultaneously turn both of the knobs counterclockwise to unseat the MPC from the
8.
ADC.
Grasp both the knobs, and slide the MPC straight out of the ADC.
9.
Place one hand around the front of the MPC and the other hand under it to support
10.
it. Slide the MPC completely out of the ADC.
CAUTION: The weight of the MPC without the ADC is concentrated in the
back end. Be prepared to accept the full weight—up to
18.35 lb (8.32 kg)—as you slide the MPC out of the ADC.
When the MPC is out of the ADC, do not hold it by the knobs, bus bars, or
edge connectors. They cannot support its weight.
Do not stack MPCs on top of one another after removal.
Place each ADC individually in an electrostatic bag or on its own antistatic mat on a
11.
flat, stable surface.
If you are not reinstalling an MPC into the emptied MPC slot within a short time, install
12.
a blank MPC panel over the slot to maintain proper airflow in the MPC card cage.
CAUTION: After removing an MPC from the ADC, wait at least 30 seconds
before reinserting it, removing an MPC from a different slot, or inserting
an MPC into a different slot.
Copyright © 2015, Juniper Networks, Inc.